Trolley-pole and stand.



' v 'No. 360,294.

- W. W. HALLBNBBGK.

PATBNTED SEPT. 26, 1905.

TROLLEY POLE AND STAND. I

APPLICATION FILED JAN. 12, 1905..

O 5 0 2' Q 2f I mgJ L l k\ J 78 77 UNITED STATES PATENT OFFICE.

WILLIAM W. HALLENBECK, OF BURRVILLE, CONNECTICUT.

' TROLLEY-POLE AND STAND.

' To all whom, it may concern;

Be it known that I, WILLIAM W. HALLEN-- BECK, a citizen of the UnitedStates, residing at Burrville, in the county of Litchfield and State ofConnecticut, have invented certain new and useful Improvements inTrolley-Poles and Stands, of which the following is a speciiication.

This invention relates to overhead-trolley construction embodying aspecial construction of base or stand for thetrolley-poles of cars.

The invention aims, primarily, to secure a device of the above classwhich admits of free movement of the pole with relation to its supportin order that it may readily accommodate itself to curves in thefeed-wire.

The invention provides a support which affords-a bearing for thepole,having a minimum amountof friction; andat the same time a specialstructural feature of the invention consists in the provision of partswhereby the base may be used in connection with various types ofswiveled heads by which the poles are ordinarily mounted upon the base.i

For a full descriptionofthe invention and the merits thereof and also toacquire a knowl-v edge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand accom-.

to in the following description and indicated in all the views of thedrawings by the same reference characters.

As is customary in devices of the nature above set forth, a suitablebase 1 is provided which is adapted to be attached to the roof of acarby suitable fastenings. The base 1 is of peculiar form having atubular extension 2, closed at the lower end and projected from theunder side of said base. The pivot or stud 3 ordinarily employed tosupport the head carrying the trolley-poleis mounted in theextension 2,and for this purpose a-sleeve or Specification of Letters Patent.Application filed an ary 12, 1905. Serial No. 24.0,848.'

pin or like member 10, which pin lO'passes above the car. :the head 15inthe usual manner, and an es- Patented Sept. 26, 1905.

similar tubular part 4 is disposed in the extension 2, being held inplace by screws 5, threaded into adjacent portions of said sleeve andthebase 1. The sleeve 4: is provided with raceways 6 at its upper andlower ends, and balls 7 are mounted in said raceways, affording aball-bearing for the pivot 3 in a manner clearly apparent. The balls 7at the lower portion of the pivot 3 are supported by a bearing plate 8,having a raceway in the upper side thereof in which said balls aremounted. The plate 8 is provided with an opening through which the lowerextremity of the pivot 3 passes, and said pivot is centralized by theplate8 as regards its position in the sleeve 4:. The extension 2 isdesigned for use as an oil-cup, and the pivot 3 is thoroughly lubricatedby means of the member 2 when the lat.- ter is filled with a suitablelubricant. The pivot 3 is shouldered near the upper extremity of thesleeve at, the upper ball-bearing 7 being below the shoulder 9, whichlatter is annularly formed upon the pivot. The pivot 3 is prevented fromdisplacement by a cotter through a transverse opening at the lowerextremity of the pivot 3, cooperating with the bearing-plate 8 toprevent displacement of the pivot aforesaid. A head 15 carries thetrolley-pole and is mounted upon the pivot 3, said head comprising abody 11 and attaching-plate 12 upon the underside of the body'll. Theplate 12 is secured to the body of the head by means of screws 13 orlike fastenings and is thereby rigidly attached to the member 11 in amanner apparent. The body 11 of the head is connected with the pivot 3by means of a transverse pin or pins 14:, which pass through theupperend portion of the pivot and adja cent portions of the head.

The head 15 is of a form similar tothose in common use, having lateralarms 16, which carry the coil-springs by which the pole (not shown) isheld in contact with the feed-wire The pole is mounted upon Thesesprings may therefore r be adjusted so as to have a less amount of ten Ision than those now in common use, because of the peculiar mounting ofthe head 15, which permits free movement of thepole, so that thepole-wheel is not likely to be displaced from the feed-wire and wearupon the said wheel and wires is greatly reduced, conducive to a longerlife of these parts. The above afiords quite a saving of expense,considering the trolley system as a whole.

The head 15, though swivelly mounted upon the base 1 through thepivot-pin 3, is not entirely supported by this pivot, having anindependent bearing upon the base, which distributes the wear andpermits a greater freedom of movement of the head with relation to thesaid base. To secure an independent bearing of the head, as abovementioned, the base 1 is provided with an annular seat 17, concentric ofthe sleeve 4 or extension 2 and surrounding the latter parts. The seat17 receives upper and lower bearing-rings 18 and 19, respectively,between which are mounted roller-bearings 20. The uppermost ring 18aforesaid is annularly recessed near its upper portion, so as to receivean integral flange 21, extending downwardly from the plate 12 andreceiving the upper portion of the ring 18. An annular flange 22projects upwardly from the base 1, and the inner wall of this flange isapproximately flush with the outer wall of the seat 17 The flange 22 isreduced at its upper portion, as shown at 23, the reduced portion beingreceived in an annular kerf or groove 24 upon the under side of theplate 12. The parts 18 and 21 have an interlocking connection virtually,and the overlapping parts 22 and 23 are such as to afford an efiectivemeans for excluding dust or other foreign matter from the bearings uponwhich the head and pivot 3 are mounted. The plate 12, which is mountedupon the body 11 of the head 15, is of course adapted for rotarymovement with said head, and this plate has a bearing upon the ring 18,between which and the ring 19 is interposed the roller-bearing 20. Itwill thus be seen that the head is supported freely for swivel movementupon the pivot 3, the bearings of which have a minimum amount offriction, and at the same time the head 15 is supported upon the rollerbearings 20 through a medium of the parts 12 and 18. The strain upon thehead 15 is thus distributed over the base, the pivot 3 is relieved of agreat deal of the strain, and the swivel mounting of the head isequalized, so as to admit of movement of the same with a minimum amountof friction, advantageous in accommodating for the curves of thetrolley-wire and, further, of important advantage in reducing the wearof the parts and increasing the general durability of the device. Beforearranging the several parts of the base and head in operative positionsthe cup or extension 2 is filled with a lubricant, and such lubricantwill supply the bearings for a long time Without renewal. Further, ifafter long use it is found that the parts of the device have becomeloose because of wear the same may be readily reground at a nominal costand will sustain continued use.

The numeral 25 in the drawings indicates the set-screws holding thewires by which the current is transferred from the pole to the fields ormagnets controlling the mechanism of the car.

Fig. 3 of the drawings illustrates a modification in the construction ofthe pivot with regard more particularly to the manner of attaching thesame to the base. Instead of utilizing the cotter-pin 10 the lowerextremity of the pivot 3 is threaded to admitof mounting of a nut 26,which holds the lower ballbearings Gin position formingabearingmembertherefor. A jamnut or like member 27 may be threaded upon the lowerextremity of the pivot to cooperate with the nut 26 and preventdisplacement of the latter.

The provision of the attaching-plate 12 is of important advantage inthat heads of different types may be secured thereto, thereby admittingof a broad application of the base or stand for use in connection withdifferent constructions of heads, such as are now being used indifferent trolley systems.

Having thus described the invention, what is claimed as new is 1. In abase or stand for trolley-poles, the combinationof a base, a pivotmounted upon said base, ahead mounted upon the pivot, the base beingprovided with a seat concentricof the pivot, a bearing-ring in the seataforesaid, and antifriction-bearings interposed between the bearing-ringand the head.

2. In a base or stand for trolley-poles, the combination of a base, apivot mounted upon said base, ahead mounted upon the pivot, the basebeing provided with a seat concentric of the pivot, a bearing-ring inthe seat aforesaid, a second bearing-ring above the lirst-mentionedbearing-ring, antifriction-bearings interposed between the said rings,and an interlocking connection between the upper ring and the head.

3. In a base or stand for trolley-poles, the combination of a base, apivot mounted upon said base, a head mounted upon said pi vot, said headcomprising a body and an attachingplate, and antifriction-bearingsbetween the attaching-plate and the base.

1. In a base or stand for trolley-poles, the combination of a basehaving atubular extension projecting from its under side, a pivotmounted in said tubular extension, means for preventing displacement ofthe pivot from the tubular extension, antifriction-bearings between thepivot and the base, a head mounted upon the pivot, andantifriction-bearings between the head and the base.

5. In a base or stand for trolley-poles, the combination of a basehaving a tubular extension, a sleeve affixed to the base within thetubular extension aforesaid, a pivot mounted in the said sleeve,antifriction-bearings between the sleeve and the pivot, a head mountedupon the pivot and comprising a body and an.

attaching-plate secured thereto, the base, being provided with a seatconcentric ofthe pivot aforesaid, bearing-rings disposed in said seat,and antifriction-loearings between said rings,

WILLIAM W. HALLENBEGK. [n s.]

Witnesses:

THOMAS J. WALL, ROLLA SABINE;

